Automatic feeding device for bar sizing machines



Aug. 8, 1933. L KERSEY 1,921,527

AUTOMATIC FEEDING DEVICE FOR BAR SIZING MACHINES Filed April 30, 1952 '4 Sheets-Sheet l gwoe'ntoz U Q N Leon/Warsaw filisc y,

Aug. 8, 1933. L. N. KERSEY AUTOMATIC FEEDING DEVICE FOR BAR SIZING MACHINES Filed April 30, 1952 4 Sheets-Sheet 2 "Ill mmn um ml um!! L. N. KERSEY Aug. 8, 1933.

AUTOMATIC FEEDING DEVICE FOR BAR SIZING MAQHINES Filed April 30, 1932 4 Sheets-Sheet 3 Z eon [Maison fif-Lse y,

L. N. KERSEY Aug. 8, 1933.

AUTOMATIC FEEDING DEVICE FOR BAR SIZING MACHINES Filed April so 1952 4 Sheets-Sheet 4 Patented Aug. 8, 1933 TENT lFFlCE AUTOMATIC FEEDING DEVICE FOR BAR SEEING MACHINES Leon NickersonKersey, Wilmington, DeL, as-

signor to Bond Manufacturing Corporation, Wilmington, DeL, a Corporation of Delaware Application April 30, 1932. Serial No. 608,523

4 Claims.

0 tion.

The principal object of my invention is to provide a feeding device by which the cork bars are fed automatically, one at a time, to the position in which they are sized, or shaved, in a machine such as that illustrated in the above-mentioned patent. I

A further object of my invention is to provide mechanism whereby the movement of the parts, which carry the feed roll to inactive position and return it to operating position, will automatically feed the cork bars into the machine into position to be operated upon thereby.

A further object of my invention is to provide a device, for use in connection with machines of the type illustrated in said Letters Patent, which device is adapted to hold a supply of cork bars to be sized and feed these bars, one at a time, into'position to be operated upon, the feeding movement being so timed that one car will be fed to the machine at each cycle of movement of the feed roll from and to operating position.

Further objects, and objects relating to details and economies of construction and operation will definiteiy appear from the detailed description to follow. In one instance, I have accomplished the objects of my invention by the devices and means set forth in the following specification. My invention is clearly defined and pointed out in the appended claims. A structure constituting a preferred embodiment of my invention is illustrated in the accompanying drawings, forming a part of this specification, in which: V

Figure 1 is a view in side elevation of a bar sizing machine embodying my invention;

Fig. 2 is a top plan view of that portion of the machine embodying my invention;

Fig. 3 is a vertical, sectional View, taken on the line 3-3 of Fig. 2;

Fig. 4 is a vertical, sectional View, taken on the line 4-4 of Fig. 3; 3

Fig. 5 is a View of the automatic feeding device in front elevation;

Fig. 6 is a fragmentary, perspective view of the feeding table;

Fig. 7 is a detail, sectional view, taken on the line 8-8 of Fig. 2, and I Fig. 8 is a fragmentary,perspective view of the adjustable bottom wall of the hopper.

In the drawings, the same reference numerals refer to the same parts throughout the several views, and the sectional views are taken looking in the direction of the arrows at the ends of the section lines. i

'I have illustrated a bar sizing machine such as is described in U. S. Patent, No. 1,817,608. This machine comprises a cylinder 11, carried by shaft 12, and having a plurality of spirally arranged knives 1O thereon. A grindingwheel l9.is arranged so as to sharpen these knives. Cooperating with the cutting cylinder there is a feed roll 41, mounted on shaft 52, so as to be rotated in a counter-clockwise direction, as shown in Fig. 1. The cutting cylinder is also connected to rotate in a counter-clockwise direction but at a much greater rate of speed so as to provide smooth cutting of the-cork bar-C rotated in a clockwise direction by the feed roll 41. The cork bar C, which is to be sized, rests on a work support 32, which is adjustably supported by the pins 34 from the, brackets 35, carried by themain frame. As shownin Figs. 1 and 3, the cork bar C and the feed roll 41 are in operating position, in which the barC rotates under. the action of the feed roll 41, and the cutting cylinder 11 removes portions of the periphery. of the bar. At the endof the cutting cycle, the feed roll 41 moves away from the cutting cylinder, allowing the corkbar C to drop from the support 32, and fall into a receptacle provided therefor. 'Thereupon, the feed roll returns to operating position and, at the properinstant,

with respect to this return movement, in the machine of the patent, the operator drops'a new bar C upon the support 32, to be operated upon by the machine. As described in said patent, the feed roll 41 is carried by a shaft 52 journaled in a yoke 57, 'whichis carried by a lever 56 pivoted in the frame work of the machine and controlled by a cam, so as to be rocked about its pivot at the proper intervals, thus causing the feed roll to move away from the cutting cylinder and return thereto. I

' My present invention has to do with a device which does away with the hand feed and automatically feeds a cork bar into position on the support 32, at the proper point in the operating cycle of the machine. In general, my invention consists of a feed hopper, having therein a movable feed table upon which a supply of cork bars may be supported within the hopper. The hopper is provided with a swinging gate, which may be pushed aside to allow a cork bar to pass through and drop into operating position in the machine. I propose to provide a part carried by and movable with the yoke 57 in which the feed roll 41 is journaled, which, in its forward movement for the purpose of bringing the feed roll into operating position, will also impart a forward sliding movement to the feed table, whereby a single bar will be propelled through the opening closed by the hinged gate and fed into the machine.

Referring to the numbered parts of the drawings, in which I have illustrated a preferred embodiment of my invention, brackets 22 are fastened to the frame of the machine by the bolts 23, and the rear ends of said brackets are supported by the vertical standards 21. The rear ends of the brackets 22 are connected by a bar 24 secured thereto. A transverse bar 25 is also secured to the brackets 22, as shown in Fig. 2. Secured to the bars 24 and 25 are a pair of parallel guide bars 26, to which the vertical side walls 27 of the hopper are secured, as shown in Fig. 4.. At the. forward edges of said side walls, there are secured a pair of blocks 28 and 29, in which rods 30 are.

journaled, each rod 30 being provided with an enlargementiil, located between .the blocks 28 and 29, so as to prevent longitudinal movement of the rods 30 with respect to the side walls of the hopper. The ends of the rods 30 are oppositedly threaded. Blocks 33 have screw threaded engagement with the upper portions of rods 30, and said blocks have secured thereto the hinge members 36,0onnected by a suitable pintle with hinge members 38 upon the end wall 37 of the hopper. Thus, the end wall of the hopper, .at the forward end thereof, is hingedly mounted so that it may swing. By rotation of the rods '30 this end wall 37 may be raised or lowered with respect to the side walls of the hopper. Blocks 39 are provided, having screw threaded engagement with the lower ends of the rods 30, and a transverse plate 40 constituting the bottom wall of the hopper is secured at its ends toand carried by the blocks 39, as show-nin Fig.8. Thus, the rotation of the rods 30 will increase or decrease thedistance between the lower edge of the end wall 37 and the bottom wall 40 to vary the size of the feeding opening and accommodate cork bars of varying sizes. Ahand wheel 68 is fastened on the upper end of each rod 30, by which the rods may be rotated .in either direction to effect this adjustment. Hand wheels 69 are threaded on the upper ends of the rods 30 and cooperate with the blocks 33 to constitute locking nuts, by which the shafts 30 may be held in adjusted position.

A swinging gate is formed by a bar 42 which is hinged to the end wall 37 of the hopper by the hinges 43, and normally closes the opening be tween the lower edge of the hopper end wall 37 and the forward edge of the bottom wall 46. A feed chute 45 is connected to the bottom wall it) by hinges 44, and is arranged to direct the cork bars to working position as they pass through the opening closed by the gate 42. Laterally extending fingers 46 are secured to the hopper end wall 37, near the lower corners thereof, and the forward ends of springs 47 are fastened to said fingers, the rear ends of said springs being connected to the cross bar 25, as shown in Figs. 2 and 3. Thus, the end wall 37 is normally held in vertical position against the forward edges of the side walls 27, but, in case of a jam, the springs 47 permit this end wall to swing outwardly to per mit material to pass therebeneath.

Within the hopper formed by the side walls 27 and end wall 37, there is arranged a feed table 48, which is supported upon a frame work, comprising the side bars 49, to which the upright members 50 and 51 are connected, and the cross bars 54 and 76. Lugs 55 project downwardly from and are secured to the cross bar 5 It will be seen that th feed table 48 is supported by this frame work in an inclined position, as shown in Figs. 3 and 6. The side bars 49 rest and slide upon the guides 26. A pair of pins 59 are carried by the crossbar 54, and a similar pair of pins 61 are carried by the fixed cross bar 24. The forward ends .of springs 60 are connected to the pins 59, V

and the rear ends of said springs are connected to the pins 61. Thus, the springs 60 tend, always, to :move the feed table rearwardly in the hopper. An adjustable pin 62, carried by the bar 2% of the hopper frame, engages the bar 53 of the feed table and limits the rearward movement thereof, under the influence of spring 60.

A yoke 63 is secured to the bearing members 58, by machine bolts 64 at the upper end of the yoke '57, and the transverse portion of the yoke 63 carries a pair of adjustable pins 65, which are so located as to engage the lugs 55, depending from the bar 54 of the feed table.

From the description of the parts given above the operation should be readily understood. As shown in Fig. 3, the feed roll is in working position, with a cork bar C on the support 32, in

cutting position, and the feed roll 41 engaging the bar C to rotate it under th action of the cutting cylinder. A supply of cork bars 66 is provided in the hopper, these cork bars resting upon the .surface as of the feed table, except one of them, 6.7, which rests on the bottom 40, just behind the end gate 42. When the feed roll 41 moves away from the cutting cylinder .10, and the cork bar C drops from the support 32, the yoke 63 moves rearwardiy, carrying With it the. pins 65. Due to the springs 60, the feed table 48 also moves rearwardly to the extent permitted by the stop pin 62. The cork bar 67 remains in position :on the bottom wall l9, but the rearward movement of the feed table 48 permits one of the'ccrk bars 66 to drop in front of the bar 70 of the feed table upon the bottom wall 40 in the rear of the bar 67. As the yoke 57 commences the return movement, to carry the feed roll to the cutting cylinder, the pins 65, engaging the lugs 55 of the feed table, move said feed table forwardly against the tension of springs 66, and the bar 70 of the feed table, acting through the cork bar in front of it, pushes the cork bar 67 through the feed opening, swinging the gate 42 to one side. The cork bar 67, thus pushed through the feed opening, di charges into the chute 45 and is delivered into cutting position upon the support 32. This operation is repeated once for each cycle of movement of the yoke 56, so that, each time that the feed roll moves away from and returns to the cutting cylinder, a cork bar is automatically fed into working position to take the place of the one which dropped from the bar support '32, at the end of the previous cutting operation.

It will be evident, therefore, that a supply of cork bars to be sized may be placed within the hopper, formed by the side walls 27 and the end wall 37, resting upon the feed table 48, and that these bars will be fed automatically, one at a time, to the sizing machine. The gate 42 swings to one side, under the pressure of the advancing feed table, 'to permit the passage of'a cork bar therethrough. In caseof'a jam, the springs 47 will yield, permitting the end-wall 37 to swing to one sideto permit the passage: of a cork bar; I am aware that the particular, mechanism herein described maybe variedconsiderably without departing from the spirit of my invention and, therefore, I, desire to claim myinvention broadlv. as indicated bythe appended claims.

What I claim is: i 1. In a machine for automatically turning and dressing cylindrical bars to uniform size, the combination of a rotatable dressingwheel, a rotatable feed roll, a support for the bar being dressed and upon which said bar is turned by said feed roll on an axis parallel to the axes of said roll and wheel, means for periodically holding said feed roll and dressing wheel in appropriate closely spaced relation for the dressing of the supported bar and for subsequently increasing the spacing upon completion of the dressing operation to release the bar from the support when dressed, and means for automatically feeding bars to be dressed to said support one-by-one in parallel relation to the adjacent surfaces of the feed roll and dressing wheel as the preceding bars are dressed and released, said means comprising a magazine for holding a plurality of bars to be dressed, said magazine having a mouth in which the foremost of the bars to be dressed is disposed above and parallel to the axis on which the bars are turned for dressing, and means for displacing the foremost bar from the mouth of said magazine to said support after the previously fed bar has been dressed and released, said last recited means comprising a pusher member disposed directly behind the foremost bar in said magazine and guided to contactthe rear surface of said foremost bar at a plurality of points lying in a line parallel to the axison which bars are ro-. tated upon said support, and means coupled to said wheel and roll spacing means and engaged with said pusher member to cause the latter to reciprocate and periodically expel said foremost bar from said magazine to said support as said dressing wheel and feed roll are returned to closely spaced bar-dressing relationship.

2. In a machine for automatically turning and dressing cylindrical bars to uniform size, the combination of a rotatable dressing wheel, a rotatable feed roll, a support for the. bar being dressed and upon which said bar isturned by said feed roll on an axis parallel to the axes of said roll and wheel, means for periodically holding said feed roll and dressing wheel in appropriate closely spaced relation for the dressing of the supported bar and for subsequently increasing the spacing upon completion of the dressing operation to release the bar from the support when dressed, and means for automatically feeding bars to be dressed to said support one-by-one in parallel relation to the adjacent surfaces of the feed roll and dressing wheel as the preceding bars are dressed and released, said means comprising a magazine having a forwardly-inclined reciprocable base upon which a plurality of bars to be dressed are supportable, and a stationary base forward of and below said reciprocable base and defining, with the upright walls of said mag- 'l azine, a mouth in which the foremost of the bars to be dressed is disposed above and parallel to the axis on which bars are rotated for dressing, and means for displacing the foremost bar from the mouth of said magazine to said support after i the previously fed bar has been dressed and released; said last-recited 'means comprising a pusher member constituting the front edge of said reciprocable base and guided to contact the rear surface of the bar disposed in the mouth'of said magazine at a plurality of points lying in a line'parallel to the axis on which bars are rotated upon said support, and means coupled to said wheel and roll spacing means and engaged with said reciprocable base toeffect periodic expulsion of said foremost bar from said magazine to said support as said dressing wheel and feed roll are returned to closely spaced bar-dressing relationship. i

3. In a machine for automatically turning and dressing cylindrical bars to uniform size, the combination of a rotatable dressing wheel, a rotatable feed roll, a support for the bar being dressed and upon which said bar is turned by said feed roll on an axis parallel to the axes of said roll and wheel, means for periodically holding said feed roll and dressing wheel in appropriate closely spaced relation for the dressing of the supported bar and for subsequently increasing the spacing upon completion of the dressing operation to release the bar from the support when dressed, and means for automatically feeding bars to be dressed to said support one-by-one in parallel relation to the adjacent surfaces of the feed roll and dressing wheel as the preceding bars are dressed and released, said means comprising a magazine having a vertical end wall and a forwardly inclined base upon which a plurality of bars to be dressed are held above said support, said end wall being articulated adjament its lower base-adjacent end and constituting, with the forward end of said base, a gateclosed mouth in which the foremost of the bars to be dressed is disposed above and parallel to the axis on which the bars are turned for dressing, and means for forcing the foremost bar against .the gate and displacing it from said magazine to said support after the previously fed bar has been dressed and released, said lastrecited means comprising a pusher member disposed directly behind the foremost bar in said magazine and guided to contact the rear surface of said foremost bar at a plurality of points lying in a line parallel to the axis on which bars are 7 rotated for dressing, and means coupled to said wheel and roll spacing means and engaged with said pusher member to cause the latter to reciprocate and periodically expel said foremost bar from said magazine to said support as said dressing wheel and feed roll are returned to closely spaced bar-dressing relation.

4. In a machine for automatically turning and dressing cylindrical bars to uniform size, the

combination of a rotatable dressing wheel, a ro- ,surafces of the feed roll and dressing wheel as the preceding bars are dressed and released, said means comprising a magazine having a vertical end wall pivoted adjacent its upper end and spring-restrained against being swung forwardly, and a :forwardly inclined base .upon which a plurality of bars "to be dressed are held above said support, said end wall ibeing articulated adjacent its lower, base-adjacent end and constituting with the forward end of said :base, a gateclosed mouth in which the foremost of the bars to be dressed is disposed above and parallel to the :axis on which the bars are turned for dressing, and means for forcing the foremost bar against the gate and displacing it from saidmagazine to said support after the previously fed bar has been dressed and released-said lastrecited means comprising a pusher memberdisemma;

.LEGN NICKERSON KERSEY. 

